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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Impacts of eutrophication on water quality in reservoirs: an assessment of nutrient inputs from catchment and of the anti-eutrophication resistance of reservoir ecosystem
 Hejzlar, Josef ; Duras, J. ; Staňková, B. ; Turek, Jan ; Žaloudík, Jiří
The paper describes a methodology for the identification and quantification of nutrient sources in catchments (i.e. mainly point and diffuse sources, fishpond production, atmospheric deposition, natural background export) and for the determination of critical loads of reservoirs with nutrients, which are prerequisite for proposing of effective anti-eutrophication measures in reservoirs. An application of this methodology at the drinking water reservoir of Mostiště and its catchment showed that the results are in agreement with alternative methods of catchment nutrient sources assessment, e.g. ratio analysis among land use characteristics and stream water quality and/or direct determination of nutrient export from agricultural land with exclusion of other sources.
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The impact of fishery management at fish ponds on water quality in the water supply reservoir of Mostiště
 Hejzlar, Josef ; Žaloudík, Jiří ; Duras, J. ; Staňková, B. ; Mivalt, R.
A balance evaluation of nutrient sources and nutrient utilisation in fish ponds in the catchment of Mostiště Reservoir that was based on an analysis of hydraulic regimes of fish ponds, composition of water inputs and outputs, and nutrient balance of fishery, i.e. inputs by fish stocking and feeding and outputs by produced fish, showed a significant conflict in the legislation of the Czech Republic that determine the permissible pollution of surface waters on one hand and that allow feeding doses in fish ponds on the other hand.
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